Drawing device



July 3, 1928. l

. W.IJ. WITKUS DRAWING. DEVICE Filed Jan. 28, 1928 Patented July 3, 1928r i I 1 UNITED"- STATES P T NT OFFWEQQ Application filed January as,1928. Serial No. 250,197. Theinvention relates to drawing devices, Forcorrect enlargements, the best'posiwhich, in my case, is with an elasticor Wire tion for the picture to be copied is on a spring band on which adrawingguide 1s horiaont-al line with the pivot-tack 3 andf l, j"operated in conjunction with a slotted wlthm thelimits ofdrawin guide.'1; In p 5 straight edged rule or measuring and ruling this position thedrawing guidel is guided 55 tool or either independently and the objectsover picture to be copied by holding writing of the invention are,first,to providea handy implement 8 and operating it withthe guiddevicefor making accurate enlargements; ance of and in'coordination with thedrawsecond, to provide means for 'making groing guidel. Thus the pictureis reproduced 10" te'sque enlargements; finch thirdarto l' by theWriting implement facilities for the proper adjustment of draw- I amaware. that prior to 'my: invention in'g guide'according to the size ofenlarge drawing devices, such as the .pantograph, ment desired foreither accurate or grotesque have been made, but none with the unique,enlargements. and novelarrangement and originality of a One form of theinvention is illustrated this. invention wherein the adjustable draw 65in the accompanying drawing, in which ing guide, and elastic orwire'spring band} Figure lvis a plan View of the entire draw inconjunction with the slotted tool or either ing device; Fig. 2, is avertical section of lndependently swings on a pivot and works theentire'device; Fig. 3, is a plan view of back and forth by the'aid ofthe elastic or.

the drawingguide connectedvup for operaspringband, and the slottedopening" runs 7 j i i tion without slotted tool; Fig. 4, is a veron thesame pivot much as the driving wheel ticalview of one side of thedrawing guide; Of an engine.

and Fig. 5, is a perspective view of the come I claim as new and desireto secure by w plete drawing device 1n operation. 7 Letters Patent I 1The slotted tool 4 with the idling pins LA drawing device comprising arpart 6 6, its writing hole 7 the adjustable drawhaying it g nal Slottherethrough and ing guide 1 on the elastic band 2, with one beingadapted for ruling and measuring,

of its connections in the screw-eye 5 and the securing means on saldpartfadjacent one other on the pivot-tack 3 constitute the comend ofsaid slot there being a scriber-re- The slotted tool 4 1n conjunctionwith the tack t adapted to be received in said slotdrawing guide 1 givesthe addedadvantages whereby the part may pivotand slide relaof measuringoff size of enlargement 'detive thereto,-an elasticelement having onesired, ruling straight lines when necessary end secured to said secumeans and the 35 andgiving greater steadiness'while drawing. other tosaid pivot tack, and a drawing 5 ing and steadiness.

The drawing guidel with elastic band'2, guide 'releasably connected tosaid elastic pencil 8 and'pivot-tack 3 may be used inde element. V 1 vpendently of the slotted tool 4, though with- 2. A drawing devicecomprising a part out the added advantages of measuring, rul having alongitudinal slot therethroughand t j being "adapted for ruling andmeasuring, 90 .The slotted tool 4 may be used with the securing means onsaid part adjacentone: drawing guide 1 on the elastic band 2 and end ofsaid slot there being a scriber-receivits connections, one in thescrew-eye 5 and g 11 a jacent said means, a pivot tack v the other onthe idling pins 6 6, with the adapted to be received in said-slotwhereby I i '45 pivot-tack 3 free, thus eliminating the full the partmayp'ivot'and slide relative there V operation of the elastic band 2,with the to, a springelementhaving one end secured result of distortionor grotesqueness in the to said securing means and thegother' to copieddrawing, the distortion varying with said pivot tack, and a drawingguide reeach change of the position of the picture leasably connected tosaid spring element. tobe copied.

pletedrawing device. ceiving hole adjacent said means,a pivot WILLIAMJoint wnrKUs, i

